They are only really funny when there is some truth to them so those seeing them find the humor when they agree, leaving it unchallenged leaves individuals to believe the "truth" that exists within the meme. Some people just don't like letting propaganda sit unchallenged.
All that said, yeah getting your "facts" from a meme is pretty dumb.
If you thinl memes are supposed to be a source to get facts, then you are probably dumber than the ones getting their news from Fox.
They are only really funny when there is some truth to them so those seeing them find the humor when they agree, leaving it unchallenged leaves individuals to believe the "truth" that exists within the meme. Some people just don't like letting propaganda sit unchallenged.
All that said, yeah getting your "facts" from a meme is pretty dumb.